VRT Advisories


VRT Rules 2006-12-12

Sourcefire VRT Update

Date: 2006-12-12

Synopsis:

The VRT is aware of vulnerabilities affecting the Microsoft Operating System and has introduced new rules to provide coverage for exploitation attempts targeting these vulnerabilities.

Details:

Microsoft Security Bulletin MS06-078:
A vulnerability in the way that Microsoft Windows Media Player handles Advanced Systems Format (ASF) files may allow a remote attacker to execute code of their choosing on an affected system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 9625.

Microsoft Security Bulletin MS06-077:
Microsoft Remote Installation Services (RIS) suffers from a programming error that may allow an attacker to upload files of their choosing onto the TFTP server; these files may then be installed onto machines using the service.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 9638.

Microsoft Security Bulletin MS06-076:
Microsoft Outlook Express does not correctly handle malformed Windows Address Book files. A remote attacker may be able to execute code of their choosing by supplying a specially crafted address book file to be read on a vulnerable host.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 9639.

Rules that may also indicate attacks targeting this vulnerability were previously released and are identified as SIDs 6412 and 6413.

Microsoft Security Bulletin MS06-074:
A vulnerability in the Microsoft SNMP service may allow a remote attacker to execute code of their choosing on a vulnerable system by supplying a malformed SNMP request to the service.

Rules to detect attacks targeting this vulnerable service were previously released and are identified as SIDs 1411 through 1414.

Microsoft Security Bulletin MS06-073:
Microsoft Visual Studio uses a WMI Wizard that does not correctly handle malformed WMI objects. This may allow a remote attacker to execute code of their choosing on a vulnerable host via a specially crafted web page.

Rules to detect attacks targeting this vulnerability were previously released and are identified as SIDs 8369 and 8370.

Rule Pack Summary:

For a complete list of new and modified rules, click here.

Warning:

Sourcefire VRT rule packs often utilize enhancements made to Snort. Operators should upgrade to the latest revision or patch level for Snort to ensure these enhancements are available before using these rules.

About the VRT:

The Sourcefire VRT is a group of leading edge intrusion detection and prevention experts working to proactively discover, assess and respond to the latest trends in hacking activity, intrusion attempts and vulnerabilities. This team is also supported by the vast resources of the open source Snort community, making it the largest group dedicated to advances in the network security industry.